FIELD: sealing of wellheads equipped with sucker rod pumps. SUBSTANCE: body recess of cup seal accommodates compressing holder with flexible sealing member inside. End face of holder is sealed on the low pressure side. The body and holder are disposed in a spaced relation to each other. EFFECT: improved design. 2 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| WELLHEAD BLOWOUT PREVENTION STUFFING BOX WITH HIGH WATER CUT OF WELLS | 2021 |
|
RU2775401C1 |
| CASING-HEAD STUFFING BOX | 1996 |
|
RU2118707C1 |
| VALVE OF OIL-WELL SUCKER-ROD PUMP | 1992 |
|
RU2005940C1 |
| HYDRODYNAMIC FLUID SEAL | 0 |
|
SU1242671A1 |
| MECHANICAL SEAL | 1993 |
|
RU2037077C1 |
| PISTON OF OIL-WELL SUCKER-ROD PUMP | 2000 |
|
RU2162966C1 |
| SUBSURFACE PUMP ROD SEALING DEVICE | 2000 |
|
RU2201529C2 |
| SEAL OF ASSEMBLING PISTON | 1992 |
|
RU2005935C1 |
| OIL-WELL SUCKER-ROD PUMP | 2000 |
|
RU2169290C1 |
| CENTRIFUGAL PUMP FOR PUMPING HIGH-VISCOUS HOT FLUIDS | 1990 |
|
RU2007620C1 |
